Encyclopedia of Historic Masonry Restoration
Some types of scaffold are designed and engineered just for temporary site access. In the case of the image below, the scaffold can be used as a working platform or in this case as an access stair. These systems and components are modular. They can… Read More »Scaffold, Access Stair
Scam pointing is a serious problem, created by low cost or poorly trained masonry contractors (sometimes not just misinformed but also intentionally misleading) in Washington DC. One of the biggest problems with scam pointing is not only that it can cause further damage to the… Read More »Scam pointing
Very few original historic skylights remain in the historic buildings of Washington DC, but the few that do remain show interesting facets of historic construction. The historic skylights were generally vented to allow air to rise passively through the house. With a window open… Read More »Skylight, historic
Brick spalling is damage to brick masonry that is the result of improper pointing or moisture trapped into mortar joints. Spalling is the cracking of the outer face of a masonry surface. The picture below shows an example of a brick kneewall where the specific… Read More »Spalling, brick
Spark arrestor were originally used to keep coal or wood burning stoves or fireplace sparks from floating or flying out of the chimney and inciting fires at other adjacent or nearby building components. The image below shows an example of where someone installed a bit… Read More »Spark arrestor
Sprinkler heads, as fire suppression systems, distribute fire suppression mediums to extinguish or deter the spread of fires. There are several different types of sprinkler systems.
Stainless steel, like steel and iron is a ferrous metal, except in contrast stainless steel has a proportion of chromiumwhich adds a resistance to oxidation. A picture of an outdoor uncovered stainless steel bench follows below. A closer view of the stainless steel bars in… Read More »Stainless steel